Abstract: A timed water control valve system for use with a shower, which comprises a valve body within a housing having a water flow passage with a water inlet for a source of water and a water outlet for a device to dispense water, which water flow is to be time controlled. The valve body includes first, second and third spool passageways, with the three spools therein tensionally positioned in their respective spool passageways and adapted to move slidably between a water flow position and a non-water flow position. A timer having a rotatable shaft is connected to a knob which on rotatable movement activates the timer to a preselected water flow time period for the flow of water. The knob is also moved between an inward, water non-activated position and an outward, water activated position; first and second cams about the shaft and between the timer and knob permit the rotation of the knob.

Abstract: A propeller grinding device and method employs two endless grinding belts which are transported past a grinding station to finish the front and back surfaces. A propeller blank is inserted between the belts and the belts are distorted by platens, each of which includes a plurality of independent platen vanes. Two cams selectively bear upon two camming surfaces of the vanes and move the vanes into desired positions corresponding to the surface contours to be formed on the front and back surfaces of the propeller blades. The cams are rotated as the blade is moved. They also may be moved along the camming surfaces. Additionally, the cams and platens may be moved parallel to the direction of cam rotation with respect to the belts. SUBACKGROUND OF THE INVENTIONThe present invention relates to grinding devices and, more particularly, to a grinder having an endless grinding belt capable of grinding contours, such as the airfoil shape of a propeller.